- 17 - 
(11) and Barthel, V. F. 1943a. Improved steam-distillatioa 
apparatus. Indus, and Xngin. Chan., Analyt. Id. 15? 596, 
illus. 
(12) ~- and Barthsl, W. F. 1943b. Nornicotlne in commercial 
nicotine sulfate solution*. (Scientific Note) Jour, Icon* 
int. 36; 627. 
(13) — — and Barthel, W. F. 1943c. Determination of nicotine and 
nornicotlne in tobaccos. Indus, and Xngin. Chea,, Analyt. 
Id. 15; 740-741. 
(14) — — and Barthel, V. F. 1944a. Tests for completeness of ex- 
traction of tobacco alkaloids from plant materials. Assoc. 
Off. Agr. Chea. Jour. 27} 224. 
(15) and Barthel, V. 7. 1944b. Claesification of tobacco, 
nicotine-nornicotine method. Indus, and Engin. Chea. 36 J 
475-477. 
(16) — - and Barthel, W. F. 1944c. Identification of nornicotlne 
in tobacco. Indue, and Bngin. Cham., Analyt, 2d. 16: 377-378. 
(17) Boyce, A. M. 19U4. Up to now with citrus insscticldee. Calif. 
Citrog. 29J 117. 
(18) Daehkevich, B. N. 1934* Description of the method of prepara- 
tion of a powdered insectl-fungiclde. Russian Patent ^9>091, 
Nov. 30. 
(19) -— 1939** Tne chemical properties of commercial anabasine 
sulfate. Trudy Leningrad. Inst. Sovet. Torgovli 1939 (2): 
8-13. [Abstracts in Ehim. Ref. Zhur. 4 (2): 71. 1941j Chea. 
Abe. 37* 3228, 1943.] 
(20) — — 1939^. The chloro- and bromo- substituted anabasine alkaloids 
and their structure. Trudy Leningrad. Inst. Sovet. Torgovli 
1939 (2): 14-21. [Abstracts in Khta. Ref. Zhur. 4 (2)t 47. 
1941; Chea. Abs. 37: 3095. 1943.1 
(21) Brmoloev, M. F. 1940. The biology of Thrlps [linl Lad.] llnarlus 
Uz. and control meaeures against it. [Leningrad] Inst. Zashch 
Raet. (Lenin Acad. Agr. Scl., U. S. S. R. , Inst. Plant Pro- 
tect.) Trudy po Zashch. Raet. (Bui. Plant Protect.) 3: 23-24 t 
illus. [In Russian. Abstract in Rev. Appl. Unt. (A) 30: 234- 
235. 19*2.] 
(22) Ivtuehenko, G. A. 19^0. The most important results of the 
inveetlgations of the phyeleloglcal section of the Tobacco 
and Machorka Institute (WITtM). Tabakwelt 10 (6): 32-41. 
[in Russian. Abstracts in Chem. Zentbl. 112 (1): 591. 
1941; Chea. Abe. 36: 7066. 1942.] 
(23) Freak, G, A. 1942. Insecticides. Chem. and Indue. 6li 429-431. 
(24) Oalakhov, P. N. 194l. Ooabating the summer cabbage fly. Sady 
